单个还是多个Maven pom.xml配置文件？
我想问一下与Maven项目中的pom.xml文件有关的这些问题。
I would like to ask these questions related to pom.xml files in Maven projects.
- 有多个 pom.xml 而不是所有依赖项都在一个
pom.xml？ - Maven项目中的这些
pom.xml文件应放在哪里？
- What is a reason to have multiple
pom.xmlfor all dependency libraries instead of having all dependencies in one singlepom.xml? - Where should be these
pom.xmlfiles in Maven project placed?
这是Spring框架的pom.xml示例 - http://search.maven.org/remotecontent?filepath=org/springframework/spring-core/3.2.5.RELEASE/spring-core-3.2.5.RELEASE。 pom
This is an example of pom.xml for Spring framework - http://search.maven.org/remotecontent?filepath=org/springframework/spring-core/3.2.5.RELEASE/spring-core-3.2.5.RELEASE.pom
- 有什么理由要有所有依赖库的多个pom.xml而不是所有依赖项都在一个pom.xml中？
maven项目可以由很多人组成rtifacts。一个工件可能是String操作库。另一个可能是使用该String操作库的webapp。
A maven project can be made of many artifacts. One artifact may be a String manipulation library. Another may be a webapp that uses that String manipulation library.
这就是为什么你不应该将所有依赖项放在一个pom中：你的String操作库不应该只引用servlets.jar，因为一个不相关的pom是一个Web应用程序。 每个工件应该只在其类路径中具有所需的。
Here's why you shouldn't put all your dependencies in one pom: Your String manipulation library should not have a reference to the servlets.jar just because an unrelated pom is a webapp. Each artifact should have only what it needs in its classpath.
（您可能有兴趣了解 dependencyManagement 标记，但它与您的问题没有直接关系。）
(You may be interested to learn about the dependencyManagement tag, but it does not directly relate to your question.)
- Maven项目中的这些pom.xml文件应放在哪里？
当@MariuszS链接到时，这里是标准目录布局。
As @MariuszS linked to, here's the Standard Directory Layout.
顶级文件描述项目： pom.xml文件（以及使用Ant时的任何属性，maven.xml或build.xml）。此外，还有一些文本文档供用户在接收源时立即阅读：README.txt，LICENSE.txt等。
At the top level files descriptive of the project: a pom.xml file (and any properties, maven.xml or build.xml if using Ant). In addition, there are textual documents meant for the user to be able to read immediately on receiving the source: README.txt, LICENSE.txt, etc.